Carlo Gavazzi RSE4812-B three phase soft starter, a 12 A AC motor controller designed for controlled starting and stopping of industrial induction motors.
£386.91
The Carlo Gavazzi RSE4812-B is a compact and reliable three-phase AC semiconductor motor controller (soft starter) designed for controlled starting and stopping of induction motors. As part of the Carlo Gavazzi RSE series motor controller range, it provides smooth acceleration, reduced mechanical stress and improved motor performance in industrial automation applications.
This DIN rail mounted soft starter uses semiconductor switching technology with an integrated bypass function to provide efficient motor control while reducing the high starting currents associated with direct-on-line starting. The RSE series provides adjustable starting functions, LED status indication and built-in transient overvoltage protection for dependable industrial operation.
With a 12 A rated operating current, a 408–552 V AC operating voltage range and support for motors up to 5.5 kW at 400 V AC, the RSE4812-B is suitable for compact motor control systems requiring reliable soft starting and stopping.
Soft starters such as the Carlo Gavazzi RSE4812-B control motor starting and stopping by gradually managing power delivery to induction motors. This reduces mechanical shock, limits starting current peaks and helps extend the service life of motors and connected machinery.
The RSE series is designed for industrial automation engineers requiring compact motor control solutions. Its integrated bypass, flexible control supply options and DIN rail mounting format allow easy integration into modern electrical control panels.
| Manufacturer | Carlo Gavazzi |
|---|---|
| Series | RSE Series |
| Model | RSE4812-B |
| Product type | Three-phase soft starter / motor controller |
| Rated operating current | 12 A |
| Rated operating voltage | 408–552 V AC |
| Rated motor power | 5.5 kW at 400 V AC |
| Control voltage | 24–110 V AC/DC and 110–480 V AC |
| Motor type | Three-phase induction motors |
| Control method | 2-phase control |
| Internal bypass | Yes |
| Mounting type | DIN rail mounting |
| Protection rating | IP20 |
| Width | 45 mm |
| Height | 82 mm |
| Depth | 102.5 mm |
The RSE4812-B is used for soft starting and stopping three-phase induction motors in industrial automation and motor control applications.
The soft starter supports motors up to approximately 5.5 kW at 400 V AC.
The Carlo Gavazzi RSE4812-B has a rated operating current of 12 A.
The unit operates with a rated operating voltage range of 408–552 V AC.
Yes, the RSE4812-B includes an integrated bypass function to improve efficiency after the motor reaches operating speed.
Carlo Gavazzi RSE series soft starters provide reliable motor control solutions for industrial machinery, reducing mechanical stress and improving system performance.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...